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    <!-- 将字符串"i come from beijing"倒置，即控制台输出"beijing from come i"
    语句直接写在程序中，不需要用户输入 -->

    <script type="text/javascript">
        var str = "i come from beijing";
        //该题主要是通过空格将该字符串分成了四份,所以只需要通过splite(' ')里面的空格分成含有4个元素的数组
        var str1 = str.split(" ").reverse().join(" ")
        console.log(str1);
    </script>
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